A stampede during a rap concert in Guinea left at least 24 people dead, hospital officials said.

The government declared a week of national mourning after what it called a “tragic drama” in Conakry, the capital. It happened on a beach in the northern Ratoma suburb where popular Guinean rap group Instinct Killers were playing among other artists.

Medics took at least 24 bodies including 13 girls to a hospital morgue at Donka, a hospital official told Agence France-Presse.

“For the time being we have 24 bodies at the Donka hospital morgue and dozens of injured were rushed to various [Conakry] health centres after this deadly stampede,” said a police officer.

The president’s office said in a statement it was “shocked by the tragic drama caused by mass movements at a cultural event”. It did not give a toll.

An investigation was being launched and an official in charge of organising such events was suspended.